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Ultrafast Electrical Superconducting to Normal States Switching in Y-Ba-Cu-O and Bi-Sr-Ca-Cu-O Microstrips

Published online by Cambridge University Press:  26 February 2011

S. Balevičius ,
A. Bičūnas ,
R. Butkute ,
V. Jasutis ,
V. Lisauskas ,
A. Vailionis ,
A. Flodström  and
B. Vengalis
S. Balevičius
Affiliation:
Semiconductor Physics Institute, Lithuanian Academy of Sciences, Goštauto 11, 2600 Vilnius, Lithuania.
A. Bičūnas
Affiliation:
Semiconductor Physics Institute, Lithuanian Academy of Sciences, Goštauto 11, 2600 Vilnius, Lithuania.
R. Butkute
Affiliation:
Semiconductor Physics Institute, Lithuanian Academy of Sciences, Goštauto 11, 2600 Vilnius, Lithuania.
V. Jasutis
Affiliation:
Semiconductor Physics Institute, Lithuanian Academy of Sciences, Goštauto 11, 2600 Vilnius, Lithuania.
V. Lisauskas
Affiliation:
Semiconductor Physics Institute, Lithuanian Academy of Sciences, Goštauto 11, 2600 Vilnius, Lithuania.
A. Vailionis
Affiliation:
Semiconductor Physics Institute, Lithuanian Academy of Sciences, Goštauto 11, 2600 Vilnius, Lithuania.
A. Flodström
Affiliation:
Materials Science, The Royal Institute of Technology, S-10044 Stockholm, Sweden.
B. Vengalis
Affiliation:
Materials Science, The Royal Institute of Technology, S-10044 Stockholm, Sweden.
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Abstract

Switching from superconducting (S) to normal (N) state was investigated using short rise time (∼ 10−10 s) electric pulses in MBE grown Bi-Sr-Ca-Cu-O and rf magnetron sputtered Y-Ba-Cu-O submicron thickness microstrips. It was found that two reversible processes: fast electronic (τ∼10∼−12 s) and slow thermal (τ∼10∼−8s) one take place during switching. At high current densities (∼107 A/cm2) irreversible changes in strip material induced by thermal runaway occurred. The use of a superconducting element as fast fault-current limiter or pulse sharpening device is pointed out.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 275: Symposium S – Layered Superconductors: Fabrication, Properties and Applications , 1992 , 589
Copyright
Copyright © Materials Research Society 1992

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References

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